I had feteer in Cairo all the way back in 2009 when our guide took us somewhere local, rather than where the tour company had made him. I don't remember it all that well other than that it was described as the Egyptian version of pizza.
Zamalek is supposedly the nicer and more affluent tourist area of Cairo and it certainly did have some more modern Western-style places like Social coffee roaster and several gelato options. Surprisingly there weren't that many food options that interested me - pasta was reasonably rated but I didn't really want that for my first meal (not including the American burgers the late night before) in Egypt.
This corner shop specialises in feteer, which was served as a layered butter pastry filled with melted roumi (Egyptian hard) cheese, jalapenos and peppers. It was thick, heavy, fried and nice in a dirty pizza way but with a slightly crisp top. In 47C heat it was a struggle to try and finish this between 2, but we did our best and got through most of it.
I'm also interested in the food stall next door to this in the alleyway which looked like nothing much but had constant amounts of young men buying and sitting opposite on the street to eat.